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Finding the Fourth Proportional to 46,811.20, 70,216.80 and 43,166.20

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Solution

The fourth proportional to 46,811.20, 70,216.80 and 43,166.20 is: 64,749.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,811.20 : 70,216.80 = 43,166.20 : x
  2. Step 2: Convert to fraction form
    46,811.20/70,216.80 = 43,166.20/x
  3. Step 3: Cross multiply
    46,811.20x = 70,216.80 × 43,166.20
  4. Step 4: Simplify right side
    46,811.20x = 3,030,992,432.16
  5. Step 5: Solve for x
    x = 3,030,992,432.16/46,811.20
  6. Step 6: Final answer
    x = 64,749.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.